Method of lighting for colored shadows

Details Method of lighting for colored shadows Method of lighting for colored shadows

1977-02-14

1978-11-14

Miller, J. D.

Illumination

Plural light sources

Particular wavelength

362811, 272 10, F21P 504

Patent

active

041258886

ABSTRACT:
Beautifully and balancedly colored shadows can be imparted by arranging color lamps in three R, G and B groups and a white light lamp for white light (W group), illuminating objects to obtain colored shadows of the objects, giving the ratio of illuminance by the white light lamp: ##EQU1## wherein I.sub.W designates an illuminance at the part illuminated by only the white light lamp, and also the illuminance in the shadows to the lights of the lamps of the three R, G and B groups; and I.sub.R designates an illuminance at the part illuminated by only the lamp of the R group in the shadow of the object to both of the lights of the lamps of the G group and the B group; I.sub.G designates an illuminance at the part illuminated by only the lamp in the G group in the shadow of the object to both of the lights of the lamps in the R group and the B group and I.sub.B designates an illuminance at the part illuminated by only the lamp in the B group in the shadow of the object to both of the lights of the lamps in the R group and the G group.

REFERENCES:
patent: 1768812 (1930-07-01), Whiting
patent: 2673923 (1954-03-01), Williams
patent: 3945729 (1976-03-01), Rosen

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